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The effects of mechanical stress on cellular senescence in adult progeria Werner syndrome

Research Project

Project/Area Number 19K23939
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0902:General internal medicine and related fields
Research InstitutionChiba University

Principal Investigator

Kato Hisaya  千葉大学, 医学部附属病院, 助教 (90841974)

Project Period (FY) 2019-08-30 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords早老症 / 老化 / ウェルナー症候群 / 線維芽細胞
Outline of Research at the Start

遺伝性早老症ウェルナー症候群は、一般的なヒトの老化に見られるような症状(白内障、糖尿病、悪性腫瘍など)を若年で呈する一方、間葉系組織を中心とした臓器に、一般老化では見られないような特有の症状(難治性皮膚潰瘍、肉腫など)を呈するが、その原因は明らかではない。本研究では、患者を苦しめる主要な要因の一つである難治性皮膚潰瘍に焦点を当て、メカニカルストレスとの関連について研究を進める。

Outline of Final Research Achievements

Adult progeria Werner syndrome exhibits symptoms similar to general human aging (cataracts, diabetes, malignant tumors, etc.) at a young age. On the other hand, there are WS-specific symptoms such as refractory skin ulcers and sarcomas, which are mainly involved in organs with mesenchymal origin. The cause of this disease phenotype is unclear. This study focused on intractable skin ulcers, which are one of the major factors that distress patients, and their relationship with mechanical stress. As a result, the foot fibroblasts derived from WS patients showed a phenotype different from that of the trunk fibroblasts. These findings may be useful for future pathological elucidation and therapeutic development.

Academic Significance and Societal Importance of the Research Achievements

WS患者の四肢は、皮下脂肪が萎縮し、石灰化を伴う難治性皮膚潰瘍を高頻度に伴う一方、体幹の皮膚には明らかな異常は見られない。しかしその差が生じる機序は不明であった。今回我々は2名のWS患者の足部および体幹から皮膚線維芽細胞を樹立し、表現型を比較した。その結果、足部由来線維芽細胞は体幹由来に比し、脂肪・軟骨分化能が低下している一方、骨分化能は同等に保たれていた。これらの結果はWSの難治性皮膚潰瘍と密接に関連している可能性があり、今後の治療開発への応用が期待される。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (4 results)

All 2021 2019 Other

All Int'l Joint Research (1 results) Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (1 results)

  • [Int'l Joint Research] National Institute of Health/National Institute on Aging(米国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Fibroblasts from different body parts exhibit distinct phenotypes in adult progeria Werner syndrome2021

    • Author(s)
      Kato H, Maezawa Y, Takayama N, Ouchi Y, Kaneko H, Kinoshita D, Takada-Watanabe A, Oshima M, Koshizaka M, Ogata H, Kubota Y, Mitsukawa N, Eto K, Iwama A, Yokote K.
    • Journal Title

      Aging (Albany NY)

      Volume: 13 Issue: 4 Pages: 4946-4961

    • DOI

      10.18632/aging.202696

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] NAD+ augmentation restores mitophagy and limits accelerated aging in Werner syndrome2019

    • Author(s)
      Fang EF, Hou Y, Lautrup S, Jensen MB, Yang B, SenGupta T, Caponio D, Khezri R, Demarest TG, Aman Y, Figueroa D, Kato H, et al.
    • Journal Title

      Nature Communications

      Volume: 10 Issue: 1 Pages: 1-8

    • DOI

      10.1038/s41467-019-13172-8

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 早老症ウェルナー症候群皮膚線維芽細胞は体幹と足部で異なる表現型を示す2021

    • Author(s)
      加藤尚也, 前澤善朗, 高山直也, 大内靖夫, 緒方英之, 窪田吉孝, 三川信之, 江藤浩之, 岩間厚志, 横手幸太郎
    • Organizer
      第63回日本老年医学会学術集会
    • Related Report
      2020 Annual Research Report

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Published: 2019-09-03   Modified: 2022-01-27  

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